3 edition of Yields of bedrock wells in Massachusetts found in the catalog.
Yields of bedrock wells in Massachusetts
Bruce P Hansen
by U.S. Dept. of the Interior, U.S. Geological Survey, For sale by the Earth Science Information Center, Open-File Reports Section in Marlborough, Mass, Denver, CO
Written in English
|Statement||by Bruce P. Hansen and Alison C. Simcox ; prepared in cooperation with the Massachusetts Department of Environmental Management, Office of Water Resources|
|Series||Water-resources investigations report -- 93-4115|
|Contributions||Simcox, Alison C, Massachusetts. Office of Water Resources, Geological Survey (U.S.)|
|The Physical Object|
|Pagination||v, 43 p. :|
|Number of Pages||43|
About the Book. Cultural History of Early South Asia: A Reader presents a wide-ranging survey of the diverse art forms of early South Asia. In doing so, it departs from the domina. (water level) in most wells completed in bedrock rises above the top of the water-bearing zone. The yield of a bedrock aquifer depends on its hydraulic characteristics and the nature of the overlying deposits. Shale and clay act as aquitards, restricting recharge to underlying bedrock aquifers.
X. WELL COMPLETION AND PRODUCTION PRACT-S A. INTRODUCTION After drilling is completed, the operator assesses the well's production potential. Usually logs are run to determine whether the well is capable of producing commercial quantities of oil or gas. Should the log interpretation be positive, the well will be completed and stimulated. An artesian well means a well deriving its water from a confined aquifer in which the water level stands above the ground surface; synonymous with a flowing artesian well. Note. Wells constructed in bedrock are commonly called artesian wells, however, only about 2 percent of bedrock wells are true artesian wells.
The MA Geological Survey Department of Geosciences Morrill Science Center University of Massachusetts North Pleasant Street Amherst, MA tenance of monitoring wells is an important network management consideration. Well abandonment procedures should include consideration of the monitoring well construction, hydrogeology, and contamination at the site. The “Handbook” serves as a general reference for the numerous factors involved in monitoring well design.
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Identifies and discusses the major factors affecting well yields with tables of median yields; includes a description and evaluation of well-test methods that can be used to evaluate the yields of bedrock wells; the source and occurrence of water in bedrock and the principal methods of drilling and well construction in MA are also described; nearlypeople in MA, or almost seven percent.
Six to seven percent of the population of Massachusetts obtains its water from domestic bedrock wells. Additional public, commercial, industrial, and domestic supplies from bedrock will be needed in the future.
Information about the factors that are related to large well yields is needed. The factors associated with well yields were identified by use of statistical analysis of reported data. YIELDS OF BEDROCK WELLS IN MASSACHUSETTS By BRUCE P.
HANSEN and ALISON C. SIMCOX U.S. GEOLOGICAL SURVEY Water-Resources Investigations Report Prepared in cooperation with the MASSACHUSETTS DEPARTMENT OF ENVIRONMENTAL MANAGEMENT, OFFICE OF WATER RESOURCES Marlborough, MassachusettsCited by: 4. Get this from a library.
Yield of bedrock wells in the Nashoba terrane, central and eastern Massachusetts. [Leslie A Desimone; Jeffrey R Barbaro; Geological Survey (U.S.); Massachusetts. Department of Environmental Protection.]. The yield of bedrock wells in the fractured-bedrock aquifers of the Nashoba terrane and surrounding area, central and eastern Massachusetts, was investigated with analyses of existing data.
Reported well yield was compiled for 7, wells from Massachusetts Department of Environmental Protection and U.S. Geological Survey databases. Yield of these wells ranged from to gallons per minute.
Low Water Yield. Bedrock wells are able to produce a high yield of water, but older bedrock wells can sometimes see a diminished flow due to clogged fissures within the bedrock. Hydrofracturing could be one way to boost yield in both new and older wells.
The process uses high-pressure water to flush fine particles and rock from bedrock fractures. Bedrock wells are drilled below the topsoil and groundwater into bedrock, tapping the cracks in the rock that carry water deep underground.
The average bedrock well in New Hampshire is between feet and feet deep, but drilling depth can go up to 1, feet. Well Caps are placed on top of the well casing to prevent debris, insects, or small animals from getting into the well.
Well caps are usually made of aluminum or plastic. They include a vent to control pressure during well pumping. Well Screens are attached to the bottom of the casing to prevent too much sediment from entering the well.
The. WRI Yields of Bedrock Wells in Massachusetts, by Bruce P. Hansen and Alison C. Simcox,43 p. WRI Estimating the Magnitude and Frequency of Low Flows of Streams in Massachusetts, by John C. Risley,29 p. WRI Relation of Precipitation Quality to Storm Type, and Deposition of Dissolved. Private wells typically provide water to single family homes.
MassDEP does not regulate private wells. Your local board of health or health department regulates them. We provide these resources to help well owners learn about proper practices for safe water.
Figure 1. All Chittenden County Bedrock Wells (points) and Bedrock Units Grouped by Yield. The map is the Chittenden County portion (8, wells) of the statewide analyses of 92, wells.
Map scale isRefer to the statewide groundwater resource maps on the VGS web site for a discussion of this data and map. Figure 3. Essex County Bedrock Wells with E or GPS Location Reported Well Yields in Bedrock Wells, Essex County, Vermont by Marjorie Gale, George Springston, Ryan Knox and Laurence Becker GROUNDWATER RESOURCES BY COUNTY This county map is part of a map series used to evaluate Vermont's groundwater resources using existing data.
The median yield for a bedrock well is between 3 and 6 gallons-per-minute (gpm). Approximately 35% of bedrock wells drilled in Maine yield 10 or more gallons per minute. Clusters of wells with yields of 10 gpm or more may define zones favorable for bedrock ground water exploration.
The final well yields of domestic wells are not solely. Statewide (Moore and others, ), the average bedrock well yield is approximately 6 gal/min, whereas the average yield of bedrock wells in the study area is 22 gal/min. Table 2–1 shows bedrock well-yield and depth statistics by bedrock formation for the study area.
Bedrock wells represent about 90 percent of all wells completed in this county. Most of the bedrock aquifers in Wells County are under confined conditions. In other words, the potentiometric surface (water level) in most wells completed in bedrock rises above the top of the water-bearing zone.
USGS Professional Paper A-D & E-J: Books accompanying the State Bedrock Geologic Map, edited by Norman L. Hatch. Thescale Bedrock Geologic Map of Massachusetts, published by the USGS inshows the distribution of the different rock units, faults, and other features that Simplified Bedrock Geologic Map of.
This data release contains well yield and ancillary data for 7, bedrock wells used in an analysis of bedrock well yield in the Nashoba Terrane and surrounding area in eastern and central Massachusetts.
The data release also contains Geographic Information System (GIS) data layers of lineaments delineated from aerial photographs and digital elevation data for a part of the Nashoba. If a bedrock well yield is only a few gpm at a well depth of to feet, NHDES recommends that the well be drilled deeper.
On the other hand, if there are only a few gpm at depth of to feet, it is reasonable to end drilling on that particular well, providing it satisfies needs. If a bedrock well yield is low, the well’s yield can. levels across the state. Other well characteristics, however, also have been changing over time, such as total well depth, casing length, the length of casing in bedrock, and to some extent, well yield.
Analyses indicated that many of the well construction variables are significantly correlated; the apparent declines in water levels may. median well yields and variability in well yields than wells in the Blue Ridge, although these differences were not statistically significant.
• Lithology and topography are site factors that may have a statistically significant impact on well yield; however, this is not consistently demonstrated throughout all well. among well yields and bedrock data, physiographic setting, remotely sensed lineaments, and well charac teristics in New Hampshire.
The statewide scale was designed as a reconnaissance-level statistical analysis of the relations between bedrock well yield and bedrock type, lineament characteristics, topography.The NHDES has determined accurate georeferenced locations for more t wells reported since The availability of this large data set provided an opportunity for a statistical analysis of bedrock-well yields.
Well yields in the database ranged from zero. A combined data set at a sampling density of per km 2 for well water [U] of samples collected in (n = ) and (n = ) reveals that the maximum [U] is μg/L, found in a bedrock well in the town of Chelsea in the Silurian-age Waterville Formation, which consists of interbedded calcareous pelite and sandstone/limestone, but is.